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# -*- coding: utf-8 -*-
# Copyright 2014 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet import defer
from ._base import BaseHandler
from synapse.api.errors import SynapseError
from synapse.api.events.room import RoomAliasesEvent
import logging
import sqlite3
logger = logging.getLogger(__name__)
class DirectoryHandler(BaseHandler):
def __init__(self, hs):
super(DirectoryHandler, self).__init__(hs)
self.federation = hs.get_replication_layer()
self.federation.register_query_handler(
"directory", self.on_directory_query
)
@defer.inlineCallbacks
def create_association(self, user_id, room_alias, room_id, servers=None):
# TODO(erikj): Do auth.
if not room_alias.is_mine:
raise SynapseError(400, "Room alias must be local")
# TODO(erikj): Change this.
# TODO(erikj): Add transactions.
# TODO(erikj): Check if there is a current association.
if not servers:
servers = yield self.store.get_joined_hosts_for_room(room_id)
if not servers:
raise SynapseError(400, "Failed to get server list")
try:
yield self.store.create_room_alias_association(
room_alias,
room_id,
servers
)
except sqlite3.IntegrityError:
defer.returnValue("Already exists")
# TODO: Send the room event.
yield self._update_room_alias_events(user_id, room_id)
@defer.inlineCallbacks
def delete_association(self, user_id, room_alias):
# TODO Check if server admin
if not room_alias.is_mine:
raise SynapseError(400, "Room alias must be local")
room_id = yield self.store.delete_room_alias(room_alias)
if room_id:
yield self._update_room_alias_events(user_id, room_id)
@defer.inlineCallbacks
def get_association(self, room_alias):
room_id = None
if room_alias.is_mine:
result = yield self.store.get_association_from_room_alias(
room_alias
)
if result:
room_id = result.room_id
servers = result.servers
else:
result = yield self.federation.make_query(
destination=room_alias.domain,
query_type="directory",
args={
"room_alias": room_alias.to_string(),
},
retry_on_dns_fail=False,
)
if result and "room_id" in result and "servers" in result:
room_id = result["room_id"]
servers = result["servers"]
if not room_id:
defer.returnValue({})
return
extra_servers = yield self.store.get_joined_hosts_for_room(room_id)
servers = list(set(extra_servers) | set(servers))
defer.returnValue({
"room_id": room_id,
"servers": servers,
})
return
@defer.inlineCallbacks
def on_directory_query(self, args):
room_alias = self.hs.parse_roomalias(args["room_alias"])
if not room_alias.is_mine:
raise SynapseError(
400, "Room Alias is not hosted on this Home Server"
)
result = yield self.store.get_association_from_room_alias(
room_alias
)
defer.returnValue({
"room_id": result.room_id,
"servers": result.servers,
})
@defer.inlineCallbacks
def _update_room_alias_events(self, user_id, room_id):
aliases = yield self.store.get_aliases_for_room(room_id)
event = self.event_factory.create_event(
etype=RoomAliasesEvent.TYPE,
state_key=self.hs.hostname,
room_id=room_id,
user_id=user_id,
content={"aliases": aliases},
)
snapshot = yield self.store.snapshot_room(
room_id=room_id,
user_id=user_id,
)
yield self.state_handler.handle_new_event(event, snapshot)
yield self._on_new_room_event(event, snapshot, extra_users=[user_id])
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